An update to WeatherCat V3.3.0 test version is now available (build 175, Feb 2024) - please see the WeatherCat Development forum for more details. (Note: Forum registration is required to be able to see/access the WeatherCat Development forum).
Set the timezone using terminal til GMT, start WeatherCat form terminal. Import the data into MySQL -> Solved the issue.Changed back to Europe/Oslo, and restart WeatherCat.